Silver-Promoted Reactions of Bicyclo[3.2.1]octadiene Derivatives
作者:Ravi S. Orugunty、Dennis L. Wright、Merle A. Battiste、Khalil A. Abboud
DOI:10.1021/ol0258740
日期:2002.6.1
[reaction: see text] Highly substituted bicyclo[3.2.1]octadiene building blocks are easily prepared from tetrachloro- or tetrabromocyclopropene through reaction with cyclic dienes. These polyhalogenated derivatives can serve as precursors to a variety of functionalized bridged bicyclic compounds. Herein, we report on the generation and reaction of electrophilic species with silver ion.
Bridged Synthons from Tetrabromocyclopropene: Studies on the Rearrangement of the Primary Diels−Alder Adduct with 2,5-Dimethylfuran
作者:Ravi S. Orugunty、Ion Ghiviriga、Khalil A. Abboud、Merle A. Battiste、Dennis L. Wright
DOI:10.1021/jo0352631
日期:2004.1.1
8-oxabicyclo[3.2.1]octadiene derivatives. It has been proposed that this involves an initial Diels−Alder reaction followed by rearrangement of the primary adduct. We have, for the first time, isolated a primary adduct and established through X-ray crystallographic analysis that the adduct is the product of an exo-selectiveaddition. Kinetic studies suggest the intermediacy of charged intermediates during the rearrangement